Means for supplying oxygen to furnaces.



.110 mourn.

MEANS FOR SUP 'PATBNTED MAY 24, x904.-

F. H. PATRICK. PLYING' OXYGEN T0 FURNACES.

APPLIOATIOH FILED APBJ ZII 1903.

Frm kHi ah -iek. Mum,

from the ash-pit through the grate-bars.

passes into the furnace.

4 points in the said fire-pot section the said outer the fire-pot, preferably below the upper level in the county of New London and State of and also shows two of the shields provided to 7 U ITE STAT s Ifatented May 24, 1904.

PATENT" OFFICE.

MEANS FOR SUPPLIYI'NG OXYGEN TO FURNACES.

I SPECIFICATION forming e i- Letters Patent No. 760,804, dated May 24, 1904.

Application filed April 21, 1903.

1'0 all whom it. ma concerrt:

Be it known that I, FRANK H. PATRIoK,a citizen of the United States, residing at Norwich,

Connecticut, have' invented a new and useful Improvement in Means for Supplying Oxygen to Furnaces, of which the following is a specification.

The chief aim of my present invention is to provide, in connection with furnaces, means for introducing into the fire-pot or combus-' tion-chamber, or both, a plentiful supply of fresh oxygen, whereby more perfect combuspossible in furnaces as now most commonly constructed'that is to say, in furnaces in which the supply of oxygen is passed upward In-' cidentallyI have also provided means for regulating said supply of oxygen and for protecting the openings through which the same In order to explain my said improvements most clearly, I have provided the accompanying sheet of drawings, in which Figure 1 is afront side elevation of a steamgenerator for house-heating purposes embodying said improvements, a portion of the the pot section being broken away to disclose the holes through which the oxygen is introduced,

prevent ashes and coals from entering said holes. Fig. 2-is a cross-sectional View of said fire-pot section taken on the line 2 2 of Fig. 1,' and Fig. 3 is a similar view taken onvthe line 3 3 of Fig. 1.

Referring to the said drawings, the letter a indicates the fire-pot section, the same being formed of two concentric cylindrical shells, whereby a water-jacket a is provided that surrounds the combustion-chamber. At stated and inner concentric shells are connected integrally and are cored or drilled to provide a plurality of holes b,through which atmospheric air maypass, and these holes 6 are located inv of the body of coals and so that the air thus introduced at Various places may mingle imme- Scrial No. 153,705. (NomodeL) diately with the heavy gases freed by the burning coals, and thus insure the more perfect consumption .of said gases than is possible when only a limited supply of air is passed Preferably upward between the grate-bars. the holes I) are staggered or otherwise arranged out of annular alinement with each other, as shown, so that air may be introduced into the fire-pot at difi erent levels and a more perfect distribution and commingling of said air with the gases will result than if said holes were all in the same plane.

' Within the fire-pot and immediately over I shieldsthus provide protected chambers coincident with the holes into which chambers the fresh supply of oxygen is first discharged and then mingled with the adjacent gases. Around the circumferential wall of the fire-pot is a loosely-mounted ring-plate d, that is supported, as here shown, on brackets of. This ring is vertically movable, being loosely supported on the said brackets, and thus capable of vertical adjustment to vary the amount of air admitted through the openings. The ringplate d is provided with holes d, that register with the holes bwhen my improvement is in service; but whenever it is desirable or necessary to out 01f entirely or partially the air supplied through the holes Z the plate 0Z may-be moved around, so as to carry the holes 03 out of register with the holes 6. In some instances I also provide a supplemental annular row of holes 6 around the upper part of the combustion-chamber or between the superimposed boiler-sections 0, so that an abundant supply of fresh oxygen may be introduced at some point above the bed of coals, andthus insure the complete consumption of the gases that otherwise might pass off unconsumed. A perforated ring or partial ring f is also provided, whereby the supplemental holes a may be covered or exposed, the ring f being supported and operable substantially like the ring-plate d, which I have described more in detail.

The steam-generator here shown is provided with the usual feed-door g, also with a cleanout door it and a clinker-door 2'.

My described improvements may be readily and cheaply applied to all or nearly all forms of furnaces, and I find by practical demonstration that the caloric results are remarkably increased. 7

Having thus set forth my invention, I claim In a furnace, a fire-pot section having concentric walls with integral connecting portions with staggered openings therethrough below the normal level of the fuelin the fire-pot,

said fire-pot being formed exteriorly with a 

